Figure 1. Map of the Nansei Islands showing the 19 sampling sites.
•, Sampling sites: Sumiyoshi (SMY), Kusuno (KSN), Naon (NON), Maeyama (MEY), Ohdo (OHD), Maeda (MED), Uka (UKA), Majanohama (MJN), Sunashiro (SNS), Irabu (IRB), Yoshino (YSN), Uganzaki (UGN), Hirakubo (HRK), Shimoji (SMJ), Ohgata Risyo (OGT), Kuroshima (KRS), Kayama (KYM), Taketomi (TKT), A-sa-pi- (ASP).